Window-control device



Oct. 28, 1930. O JOSEPH WINDOW CONTROL DEVICE Filed July 10, 1929 2 Sheets-Sheet l 1930- o. e. JOSEPH W'INDOW CONTROL DEVICE Filed July 10, 1929 2 Sheets-Sheet 2 Patented. Oct. 28; 1930 oscnn egtrosnrn, F LOUISYILLE'KENTUCKY f winnow-con'rnon DEVICE Application: fil r m Thisinvention is a device for effecting the 7 position against its normal closing tend-- 1 ency. A further object'is'to provide'emeans 10:. by eivhichthe operationofthe sash retaining means may be controlled at aposition distant' fromthefwindowy A. further object is to provide an attachment of the characterdescribedwhich inayhe applied either to an 1 upper or a lower sash; V

4 The invent on will be hereinafterfullyset forthand 1 particularly pointed out in the claims. Y p i In the accompanying drawing} I y i- Figure 1 is-aneleva'tion illustrati cal WindoWfii-a ne stile With l the invention applied theretoif' Figure 2 is an elevation opposite to, that fFigure 1. Figure-3is a sectional' iewzon the line ofFig-ure 1. Figure4 -is a sectional View on the line 44 of Figure l. Figures 5 and 6 are Views illustrating'a SlighhIfiOdificahiOm I e Referring to the drawn g7- is V j designates a typical'stile of a standard window frame,

and His the pulley casing Which-is normally inserted into a recess, ofthe stile, Asash pulley :12; around which the usual sashcord 13 tr vels,-isrotatably mounted upon estate 14',"which is' also-rotatahly supported Within the'casinginfsuitable manner; Thesash' S isof typical construction itheisa ne is p I V W clos ng movement-of the sashflsj-resistedhy. j

true of the a h i h edly mounted on' theshaft 1i is a'ratch et fwheel 15, which is provided" with periph- 40L eral teeth shaped to be' engag ed by a springpre'ssed' pawl: 16,:pivotally mounted on one side of the pulley 12.; Rotatably mounted theic'asing lOis a; counter shaftC, having :a

brake druin, 16 fixedly secured thereto 'at' 'onef end the other' end *offsaid shaft being geared withthe shaft-14L in suitable manner; For purp'oseso'f illustrationthe counter shaft is provided with a worm 17, which neshes with a worm gearl8gfigedly mounted on the share 14.

yenient operating position.

raise'ch the weight of the usual sash weights effect: of the sash, causes the pawl to, engage,

1929, Serial No. 377,239.

The brake drum 1 6 is'held against rotation byme'ans of a brake lever l9',,pivotally sup-' ported at one end' as indicated at 20, "and 'havinga'curved surface conforming to the peripheral contour or saididrum. Said brake lever'is normally held-inengagement with thec'lruinbymeans of a spring 21. V Thefree end of the lever 19 is provided with an eye 22, to which is connected one end of acord 23, which lnay be led to any desired con-' Located .beneath the brake lever 19is'an electro magnet 2%, K so positioned that "said. brake -le ei-f op erates as an armature there'forf The Wires from said magnet may beinoved'to anyde sired or convenient operatingpositiomand' connected With a pushbutton and asource r of electricity, which are so Well understood" intheelectrical art-that illustration "is consid ered unnecessary. V r

yThe structureethus far described is; des1gned'for the operationlofthe lower sash S of a Window. In-prafctice,"the sashj cord pulley is free to rotate' as the'window is- V being diminished'in any desiredr ways'o 1 that [the sash slightlyoverbalancesthe:

Weights. Byineans'of this arrangement{thefv pulley 12 i'sitree to rotate as theliv'indow sash" i v is raised, the pawl 16 riding overthe teeth v of the ratchet Wheel 15. Just as soon asthe sash is'ijelea'sedby the person who is moving 1 V it to open position, the tendency' to'ieversely rotate the. pulley due to u m-Owrb'aMnei g f the nearest tooth of the ratchet Wheel '15, and

reason of the engagement of saidf pa'wl' and" ratchet, the engagement of the were shaft;

withytheworin gear"18-; and the 'en'gageinent 0ftheJhralreleVer 19 with thehrake '16; Tlie frictionof the brake leyeragainst he the; sur'fiace of the brake drum; together'with V the angular relation of 'the'teeth of theworni amount of pressure on the brake drum to iew of auch a c lever 19 is drawn out of engagement with the brake drum 16, against the tension of spring 21. As long as the pull upon the cord 25 is maintained, or the circuit through the magnet 24 is maintained, as the case may be, the window sash will gradually lower, it being understood that the pitch of the intermeshing teeth of the worm gearing is such as to retard the closing movement of the sash, so that it will slowly move to closed position without slamming. The reaction of the worm gearing also serves to reduce the required revent the sash from closing. p

The form illustrated in Figuies'fi and 6' is luticsigned to be applied to the sash cord P the parts in a reversed position, so t at the upper sash may belowered and will be moved toiclosed position by the increased overbalancing welglrt of the sash weights. In other words, for the lower sash it is necessary that the ,sash be slightly heavier than the sash Weights, but where the device is applied to the, upper sash it is necessary for the sash to be somewhat lighter than the sash weight.

Referring to Figures 5 and 6 it will be ob-, served that the teeth of the ratchet wheel .15 are disposed oppositely to those of the ratehetwheel 15. The worm 17? is formed on or attached to the pulley shaft 14, and the wqrmgear 18 is carried by the countershaft.

C. l .,It is Obvious that this arrangement is the reverse of that illustrated in the other figurea, and-that for the movement in the opposite direction, the operation is the same.

It is referred to establish this differential; in loa by substituting for the usual sash weights lighter or heavier ones, according to whether they are applied to the lower or'the upper sash. The invention is not limited to thmhrrangement, however, and contemplates the employmentof any difierential loadi within the scope of the append dd claims.

Thaadvantages of the invention will be y'apparent to those skilled in the art to wh ch t belongs. It will be particularly obsepved that simple means have been providedwhich. will permit of the'manual openof awindowsash andinsure retention of 1d in-the desired openposition. An impogtant advanta e isthat the control deharacter that the closing mpgement of the sash may be arrested at anyposition within its limits of travel, by

I thug the brake lever to reengage the Erakedrum. Another obvious advantag eis device may be applied to windows of p typical construction snow in general use withoutssu ntial change of structure.

Having thus explained the nature of the invention and described an operative manner of constructing and usingthe same, although ey of an upper sash, and differs from the figures previously described only in lacing ter described comprisin gaging said drum.

able control means normally preventing rotation of said shaft.

2. A window control device of the character described comprising a rotatably su ported shaft, a sash cord pulley rotatab y mounted on said shaft, means for normally preventing relative rotation of said shaft and said pulley in one direction, brake means normally preventing rotation of said shaft,

and means controlling the operation of said brake means. I

.3. A window control device of the character described comprising a rotatably. supported shaft, a sash cord pulley rotatably mounted on said shaft, means for normally preventing relative rotation of said shaft and said pulley in one direction, a rotatably mounted brake drum operatively connected with said shaft, a brake lever normally enga 'ng said brake drum so as to prevent rotation of said shaft, and control means for said brake lever.

4. A window control device of the character described comprisin' a rotatable shaft,a sash cord pulley rotata ly mounted on said shaft, an overthrow clutch device connecting said shaft and said pulley so as to cause them to rotate in unison in one direction, means normall preventin rotation of said shaft in eitherirecton an control means for releasingthe shaft from said rotation preventing means.

5. A window control device of, the characa rotatable shaft,

a sash cord pulley rotata I mounted on said shaft, an overthrow clutc device connecting said shaft and said pulley so as to cause them to rotate in unison in one direction, a

meeting said brake drum and said shaft soas to prevent rotation of the shaft in eitherdirection, and a brake member releasably en- .6; A window control device of the characrotatably mounted brake drum, means conter described comprising a rotatable main 7 shaft, a sash cord pulley rotatably mounted on said shaft, an overthrow clutch device con necting said shaft and said pulley so as to cause them to rotate in unison in windowclosing direction, a worm gear fixed to said shaft, a worm shaft engaging said gear means normally preventing rotation of sai wormfshaft so that the window-closing rotation of the main shaft is prevented, and control means for releasing sa d worm shaft from said rotation prevention means. i

sash cord pulley rotatably mounted on said shaft, an overthrow clutch device connecting said shaft and said pulley so as to cause them to rotate in unison in one direction, a brake shaft, a brake drum on said shaft, a worm on saidbrake shaft, a worm gear on the pulley shaft in mesh with'said worm shaft, and a brake member releasably engaging said brake drum so as to free said pulley shaft for rotation with said pulley.

9. A window control device of the character described comprising a rotatable shaft, a sash cord pulley rotatably'mounted on said shaft, an overthrow clutch device connecting said shaft and said pulley so as t0 cause them to rotate in unison in one direction,-a brake i so as to-cause thesash to normally move to 7 "closed position, of a rotatably mounted shaft,

said brake drum and its drum, a brake lever, a spring yieldably holding sald lever in engagement with said brake drum, connections between saidbrake drum a sash cord pulley rotatably mounted on said shaft, means for causing said shaft and pulley to rotate together in one direction a sash cord passed around said pulley and connecting said sash and said weight, means for preventing rotation of said pulley and said shaftin the one direction mentioned so as to support said sash in open position, and

said rotation preventing means.

In testimony whereof I have hereunto set my hand.

OSCAR e. JOSEPH.

control means for releasing said pulley from and said pulley shaft to normally prevent I rotation of said shaft and pulley'in the one direction mentioned,'and. means for holding i said brake'lever againstthe tension of said spring.

10. A windowcontrol device comprising a,

rotatable shaft, a sash cord pulley rotatably mounted on said shaft, a ratchet wheel fixed tosaid shaft, a pawl mounted onsaid pulley so as to engage said ratchet wheel. a brake drum, means rele'asably holding said brake drum against rotation, means connecting said brake drum and said pulleyshaft so as to prevent rotation of said shaft in one di rection, and control means for maintaining said brake drum and its holding means in disengaged relatlon. v p

11. A' windowcontrol dBVlCO COHIPIISlIlg a rotatable shaft, a sash cord pulley rotatably mounted on said shaft, a'ratchet wheel fixed to said shaft, a pawl mounted on said pulley so as to engage said ratchetwheel, a counter shaft, a-br'ake drum secured to the counter shaft, gear -mechanism connecting said counter shaft with thefirst mentioned shaft so as to prevent rotation of said shaft in one direction, and control means for maintaining holding means in disengaged relation. e 12. Thecombination with a window sash and a weight therefor, there being ardifi'erential in the load of the sashand-the weight loo izo 

